/* * Copyright (C) 2007 Oracle. All rights reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public * License v2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public * License along with this program; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 021110-1307, USA. */ #ifndef __IOCTL_ #define __IOCTL_ #include #include #include #define BTRFS_IOCTL_MAGIC 0x94 #define BTRFS_VOL_NAME_MAX 255 /* this should be 4k */ #define BTRFS_PATH_NAME_MAX 4087 struct btrfs_ioctl_vol_args { __s64 fd; char name[BTRFS_PATH_NAME_MAX + 1]; }; #define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0) #define BTRFS_SUBVOL_RDONLY (1ULL << 1) #define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2) #define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0) struct btrfs_qgroup_limit { __u64 flags; __u64 max_referenced; __u64 max_exclusive; __u64 rsv_referenced; __u64 rsv_exclusive; }; struct btrfs_qgroup_inherit { __u64 flags; __u64 num_qgroups; __u64 num_ref_copies; __u64 num_excl_copies; struct btrfs_qgroup_limit lim; __u64 qgroups[0]; }; struct btrfs_ioctl_qgroup_limit_args { __u64 qgroupid; struct btrfs_qgroup_limit lim; }; #define BTRFS_SUBVOL_NAME_MAX 4039 struct btrfs_ioctl_vol_args_v2 { __s64 fd; __u64 transid; __u64 flags; union { struct { __u64 size; struct btrfs_qgroup_inherit *qgroup_inherit; }; __u64 unused[4]; }; char name[BTRFS_SUBVOL_NAME_MAX + 1]; }; #define BTRFS_FSID_SIZE 16 #define BTRFS_UUID_SIZE 16 struct btrfs_scrub_progress { __u64 data_extents_scrubbed; __u64 tree_extents_scrubbed; __u64 data_bytes_scrubbed; __u64 tree_bytes_scrubbed; __u64 read_errors; __u64 csum_errors; __u64 verify_errors; __u64 no_csum; __u64 csum_discards; __u64 super_errors; __u64 malloc_errors; __u64 uncorrectable_errors; __u64 corrected_errors; __u64 last_physical; __u64 unverified_errors; }; #define BTRFS_SCRUB_READONLY 1 struct btrfs_ioctl_scrub_args { __u64 devid; /* in */ __u64 start; /* in */ __u64 end; /* in */ __u64 flags; /* in */ struct btrfs_scrub_progress progress; /* out */ /* pad to 1k */ __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8]; }; #define BTRFS_DEVICE_PATH_NAME_MAX 1024 struct btrfs_ioctl_dev_info_args { __u64 devid; /* in/out */ __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ __u64 bytes_used; /* out */ __u64 total_bytes; /* out */ __u64 unused[379]; /* pad to 4k */ __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */ }; struct btrfs_ioctl_fs_info_args { __u64 max_id; /* out */ __u64 num_devices; /* out */ __u8 fsid[BTRFS_FSID_SIZE]; /* out */ __u64 reserved[124]; /* pad to 1k */ }; /* balance control ioctl modes */ #define BTRFS_BALANCE_CTL_PAUSE 1 #define BTRFS_BALANCE_CTL_CANCEL 2 #define BTRFS_BALANCE_CTL_RESUME 3 /* * this is packed, because it should be exactly the same as its disk * byte order counterpart (struct btrfs_disk_balance_args) */ struct btrfs_balance_args { __u64 profiles; __u64 usage; __u64 devid; __u64 pstart; __u64 pend; __u64 vstart; __u64 vend; __u64 target; __u64 flags; __u64 unused[8]; } __attribute__ ((__packed__)); struct btrfs_balance_progress { __u64 expected; __u64 considered; __u64 completed; }; #define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0) #define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1) #define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2) struct btrfs_ioctl_balance_args { __u64 flags; /* in/out */ __u64 state; /* out */ struct btrfs_balance_args data; /* in/out */ struct btrfs_balance_args meta; /* in/out */ struct btrfs_balance_args sys; /* in/out */ struct btrfs_balance_progress stat; /* out */ __u64 unused[72]; /* pad to 1k */ }; struct btrfs_ioctl_search_key { /* which root are we searching. 0 is the tree of tree roots */ __u64 tree_id; /* keys returned will be >= min and <= max */ __u64 min_objectid; __u64 max_objectid; /* keys returned will be >= min and <= max */ __u64 min_offset; __u64 max_offset; /* max and min transids to search for */ __u64 min_transid; __u64 max_transid; /* keys returned will be >= min and <= max */ __u32 min_type; __u32 max_type; /* * how many items did userland ask for, and how many are we * returning */ __u32 nr_items; /* align to 64 bits */ __u32 unused; /* some extra for later */ __u64 unused1; __u64 unused2; __u64 unused3; __u64 unused4; }; struct btrfs_ioctl_search_header { __u64 transid; __u64 objectid; __u64 offset; __u32 type; __u32 len; } __attribute__((may_alias)); #define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key)) /* * the buf is an array of search headers where * each header is followed by the actual item * the type field is expanded to 32 bits for alignment */ struct btrfs_ioctl_search_args { struct btrfs_ioctl_search_key key; char buf[BTRFS_SEARCH_ARGS_BUFSIZE]; }; #define BTRFS_INO_LOOKUP_PATH_MAX 4080 struct btrfs_ioctl_ino_lookup_args { __u64 treeid; __u64 objectid; char name[BTRFS_INO_LOOKUP_PATH_MAX]; }; /* flags for the defrag range ioctl */ #define BTRFS_DEFRAG_RANGE_COMPRESS 1 #define BTRFS_DEFRAG_RANGE_START_IO 2 struct btrfs_ioctl_defrag_range_args { /* start of the defrag operation */ __u64 start; /* number of bytes to defrag, use (u64)-1 to say all */ __u64 len; /* * flags for the operation, which can include turning * on compression for this one defrag */ __u64 flags; /* * any extent bigger than this will be considered * already defragged. Use 0 to take the kernel default * Use 1 to say every single extent must be rewritten */ __u32 extent_thresh; /* * which compression method to use if turning on compression * for this defrag operation. If unspecified, zlib will * be used */ __u32 compress_type; /* spare for later */ __u32 unused[4]; }; struct btrfs_ioctl_space_info { __u64 flags; __u64 total_bytes; __u64 used_bytes; }; struct btrfs_ioctl_space_args { __u64 space_slots; __u64 total_spaces; struct btrfs_ioctl_space_info spaces[0]; }; struct btrfs_data_container { __u32 bytes_left; /* out -- bytes not needed to deliver output */ __u32 bytes_missing; /* out -- additional bytes needed for result */ __u32 elem_cnt; /* out */ __u32 elem_missed; /* out */ __u64 val[0]; /* out */ }; struct btrfs_ioctl_ino_path_args { __u64 inum; /* in */ __u64 size; /* in */ __u64 reserved[4]; /* struct btrfs_data_container *fspath; out */ __u64 fspath; /* out */ }; struct btrfs_ioctl_logical_ino_args { __u64 logical; /* in */ __u64 size; /* in */ __u64 reserved[4]; /* struct btrfs_data_container *inodes; out */ __u64 inodes; }; struct btrfs_ioctl_timespec { __u64 sec; __u32 nsec; }; struct btrfs_ioctl_received_subvol_args { char uuid[BTRFS_UUID_SIZE]; /* in */ __u64 stransid; /* in */ __u64 rtransid; /* out */ struct btrfs_ioctl_timespec stime; /* in */ struct btrfs_ioctl_timespec rtime; /* out */ __u64 flags; /* in */ __u64 reserved[16]; /* in */ }; struct btrfs_ioctl_send_args { __s64 send_fd; /* in */ __u64 clone_sources_count; /* in */ __u64 *clone_sources; /* in */ __u64 parent_root; /* in */ __u64 flags; /* in */ __u64 reserved[4]; /* in */ }; #define BTRFS_QUOTA_CTL_ENABLE 1 #define BTRFS_QUOTA_CTL_DISABLE 2 #define BTRFS_QUOTA_CTL_RESCAN 3 struct btrfs_ioctl_quota_ctl_args { __u64 cmd; __u64 status; }; struct btrfs_ioctl_qgroup_assign_args { __u64 assign; __u64 src; __u64 dst; }; struct btrfs_ioctl_qgroup_create_args { __u64 create; __u64 qgroupid; }; /* BTRFS_IOC_SNAP_CREATE is no longer used by the btrfs command */ #define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ struct btrfs_ioctl_vol_args) #define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ struct btrfs_ioctl_vol_args) #define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ struct btrfs_ioctl_vol_args) #define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ struct btrfs_ioctl_vol_args) struct btrfs_ioctl_clone_range_args { __s64 src_fd; __u64 src_offset, src_length; __u64 dest_offset; }; /* trans start and trans end are dangerous, and only for * use by applications that know how to avoid the * resulting deadlocks */ #define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6) #define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7) #define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8) #define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int) #define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ struct btrfs_ioctl_vol_args) #define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ struct btrfs_ioctl_vol_args) #define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ struct btrfs_ioctl_vol_args) #define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ struct btrfs_ioctl_clone_range_args) #define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ struct btrfs_ioctl_vol_args) #define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ struct btrfs_ioctl_vol_args) #define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ struct btrfs_ioctl_defrag_range_args) #define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ struct btrfs_ioctl_search_args) #define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ struct btrfs_ioctl_ino_lookup_args) #define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, u64) #define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ struct btrfs_ioctl_space_args) #define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ struct btrfs_ioctl_vol_args_v2) #define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ struct btrfs_ioctl_vol_args_v2) #define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64) #define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64) #define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ struct btrfs_ioctl_scrub_args) #define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28) #define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ struct btrfs_ioctl_scrub_args) #define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ struct btrfs_ioctl_dev_info_args) #define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ struct btrfs_ioctl_fs_info_args) #define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ struct btrfs_ioctl_balance_args) #define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int) #define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ struct btrfs_ioctl_balance_args) #define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ struct btrfs_ioctl_ino_path_args) #define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ struct btrfs_ioctl_ino_path_args) #define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ struct btrfs_ioctl_received_subvol_args) #define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args) #define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ struct btrfs_ioctl_quota_ctl_args) #define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ struct btrfs_ioctl_qgroup_assign_args) #define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ struct btrfs_ioctl_qgroup_create_args) #define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ struct btrfs_ioctl_qgroup_limit_args) #endif